Calculating-machine.



No. 7l0,772. Patented Oct. 7, I902.

H. E. GOLDBERG.

CALCULATING MACHINE.

(Applicttion Med Feb. 24, 1909.) (No Model.) 13 Sheets-Shoot l.

' IIHIIHIIIIIIIIIIIIH IHIII No. 7I0,772. Patented Oct. 7, 1902.

H. E. GOLDBERG.

CALCULATING IACI'IINE 1i don all. 24, 1905.) (No Model.) a |3Shasta-Shoot 2 lllllll "HHIIHII l mt mm: mm m umouwa. wunmmom u. c

Patented Oct. 7, I902.

No. 7l0.772.

H. E. GOLDBERG.

CA ATING MACHINE.

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(No Ilodol.)

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Patented Oct. 7, I902.

H. E. GOLDBERG.

CALCULATING MACHINE. (Apphcl-t onmndllb 24 1902 l3 Sheets-Sheet 4 (NoModal.)

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No. 7|o,772.

H. E. GOLDBERG.

CALCULATING MACHINE.

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Pa tented Oct. 7, I902.

l3 Sheots-Sheot 5.

No. 7l0,772. Patented Oct. 7. I902.

H. E.-GOLUBERG.

CALCULATING MACHINE.

(Applicltion filed lab. 24, 1902. (In louel.) l3 Sheets-Shoat 6 lllllly//% fl/ g THE NORRIS F YE U PNOYO-UTHCY WASQINGTON, D- C No. 710,772.Patented Oct. 7, I902.

H. E. GOLDBERG.

CALCULATING MACHINE.

(Lpplicltilm Med Feb. 34, 1909.]

(No Model.) I3 8heoh$hoot 7.

- Patentod Oct. 7, I902. H. E. GOLDBERG.

CALCULATING IAOHINE.

(Applicltion m rm :4, 1m.)

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No. 7|o,772.

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No. 7|0,772. Patented Oct. 7, I902.

' H. E. GOLDBERG.

CALCULATING IACHINE {Application flhd leb. 24, 1902.) non") l3Shoets-Sheet 9.

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No. 7l0,772. Patented Oct. 7, I902.

H. E. GOLDBERG.

CALCULATING IACHINE.

(Application am Fob. 24, 1902. (lo Model.) l3 Sheen-Shoat ll.

' JV" i A1225 mum M Illllllllllfl Ir 9; 99 m Patented Oct. 7, I902. H.E. GOLDBERG. CALCULATING MACHINE.

(Application filed. Feb. 24, 1902.)

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' No. 710,772. Patented on. 7, I902. n. E. newness.

CALCULATING MACHINE.

(Application filed m). 24, 1002.). (No Model.) l3 Sheets-Sheet l3.

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UNITED STATES.

PATENT OFFICE.

HYMAN ELI GOLDBERG, OF CHICAGO, ILLINOIS.

CALCULATING-MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 710,772, dated October7, 1902.

Application filed February 24, 1902. Serial No. 95,342. (No model.)

To (Li/Z whom it may concern.-

Be it known that I, HYMAN ELI GOLDBERG, a citizen of the United States,residing in the city of Chicago, county of Cook, State of Illinois, haveinvented a new and useful Improvement in Calculating-Machines, of whichthe following is a specification.

My invention relates to calculating-machines, and has for its object theproduction of a machine which shall be simple and durable inconstruction, easily operated, and positive in its action. To this end Ihave produced certain mechanical contrivances and combinations ofelements which are particularly pointed out in the claims hereof andwhich are illustrated in the accompanying drawings.

My present machine is shown in the form of an attachment totype-writers; but it is evident that by independently supplying therequisite parts my machine may exist as a complete and independentcalculating-machine.

Certain parts of the mechanism herein shown are shown and claimed in anapplication for Letters Patent of the United States filed by meSeptember 26, 1901, Serial No. 76,680.

In the accompanying drawings, Figure 1 is a general front view of mymachine inclosed within the outer casings thereof and shown in positionupon a typewriter. Fig. 2 is a general sectional view looking in thedirection of the arrows on the line 2 2, Fig. 1. Fig. 3 is a sectionalview in plan, taken on the line 3 3, Fig. 2, with the outer casingsremoved. Fig. 41 is a fragmentary plan view indicating my machineattached in position upon the typewriter. Fig. 5 is a plan view of therockshafts and connected parts of the concentrating mechanism. Fig. 6 isa sectional view showing the relative positions of the mechanism lookingin the direction of the arrows on the line 6 6, Fig. 1. Fig. 7 is a rearview of the setting and reversing mechanism. Figs. 8 and 9 are frontviews of the reversing mechanism in its two diiferent positions. Figs.10 and 11 are side and end views, respectively, of the sliding parts ofthe reversing mechanism. Fig. 2 is a front view of the mechanism shownin Fig. 7. Figs. 13, ll, and 15 are side views of the universal gearwhich forms a part of the setting mechanism. Figs. 16, 17, 18, and 19are sectional views taken, re spectively, on the lines 16 10, 17 17, 181S, and 1f) 19, Fig. 14. Fig. 20 isatop view from the rear of themechanism shown in Figs. '7 and 12. Fig. 21 is a rear view of theunmeshing-bar. Fig. 22 is a side view in section on the line 22 22, Fig.21, showing the operation of the unmeshing-cam. Fig. 23 is a rear viewof the locking-lever which operates upon the setting-wheel. Figs. 24 and25 are two top views looking from the rear of the machine, illustratingthe lateral shifting of the masterpinion. Figs. 26, 27, and 28 arediagrammatic side views of the unmeshing-cam and its arm of thelocking-lever, illustrating the successive positions of the parts. Theparts intervening between the shifting collars on the unmeshingarhor areomitted from these figures to facilitate an understanding of thearborshifting devices. Figs. 29 and 30 are side views of thesetting-wheel, universal gear, and one arm of the locking-lever, showingthe successive positions of the parts. Figs. 31, 32, and 3-1 arediagrammatic views illustrating the operation of the digit-sectors andthe unmeshingbar. Fig. is a front view of the receiving mechanism uponwhich the result of the calculation is indicated. Figs. 36 and 37 aresectional views of said receiving mechanism, taken on the line 36 36,Fig. 35, showing different positions of the rocking frames of thecarrying mechanism. Figs. 38 and 3.) are side and front views,respectively, ofa figure-wheel. Fig. 40 is a side view, and Figs. I1 and12 are edge views, of a rocking frame. Fig. 13 is a rear view inelevation, and Fig. 41 is a plan view from the front, showing thereceiving mechanism. Fig. A15 is a front view of the fixed bars whereonthe receiving mechanism travels. Figs. 46, 47, and 48 are sectionalviews of said bars, lookingin the direction of the arrows on the lines16 46 and i7 view of a single cam-section of a carrying wheel; and Fig.5-1 is a side View of two camsections of said wheel, showing the mannerin which they combine to form in this inthe means for adjusting thedepending carriage-arm laterally upon the carriage, the view being takenin section on the line 62 62, Fig. 4.

Similar numerals refer to similar parts throughout the several views.

For convenience the machine will be considered under the five generalheadings, to wit: The concentrating mechanism, which includes thekey-action and connected parts operating to drive the digit-levers; thevaluating mechanism, which transmits motion from said digit-levers tothe master-pinion; the reversing mechanism, which transmits the motionfrom the master-pinion to the setting-Wheel and determines in whichdirection the setting-wheel shall rotate; the locking mechanism forpreventing accidental rotation of the setting-wheel; and the receivingmechanism, whereby the action of the settingwheel controls thefigure-wheels.

In the type-writer, 1 represents the framework; 2, the laterally-movablecarriage; 3, the type-writer keys, and 4 the spacing-bar.

The concentrating mechanism.-The keyvriders 5 are secured by means ofthe setscrews 6 to the shanks of such of the keys 3 as representnumerals, and said riders are pivotally connected to the bell-cranklevers 7 by means of the links 8, as best shown in Figs. 2 and 6. Saidcrank-levers 7 are provided with a series of apertures 9 for receivingand engaging the upper extremities of said links to provide foradjustment between said levers and the keys 3. The base-plate 10 of thecalculating mechanism is rigidly secured to the type-writer frame andcarries the lugs 11, which form bearings for the rockshafts 12 of theconcentrating mechanism. Said lugs also form bearings for thefulcrumshaft 13. Said crank-levers 7 are loosely mounted on saidfulcrum-shaft and are kept in their proper relative positions thereon bymeans of the spacing-collars 14. The links 15 are connected at oneextremity to said crank-levers 7 and at the other extremity to therock-shaft arms 16. Said rock-shaft arms are rigidly fastened to therock-shafts l2, and the parts are therefore so arranged that thedepression of one of the figure-keys 3 of the typewriter causes therotation of the respective crank-lever 7 upon the fulcrum shaft 13 andthe consequent rotation of the respective rock-shaft 12. In the presentinstance the operative rock-shafts 12 are nine in number,

an idle tenth shaft being placed in the mech anism for the sake ofsymmetry and uniformity in manufacture. Said shafts are arranged in twogroups of five each, each shaft having an independent bearing in thecenter one of the lugs 11 and one of the side lugs 11. Near said centerlug each operative shaft 12 carries a rigidly-set digit-lever arm 1'7,and said arms 17 are connected to their respective digit-levers 18 bymeans of the links'19. This grouping of the rock-shafts and connectedparts enables the effects of'the action of the scattered keys 3 to beconcentrated into a small space, thereby rendering possible a compactand convenient machine.

The oaluat'mg mechanism-Said digit-levers 18 are loosely mounted on thefulcrumshaft 20 and prevented from moving laterally thereon by means ofthe hubs of said levers. Said shaft is held in position by means of theplates 21 21, which are mounted on the base-plate 10 and-form side wallsfor the machine. Said levers 18 extend in two directions from said shaft20, one arm being connected to the links 19, as described, and the otherarm carrying apin 22 for actuating the digit-sectors 23. Saiddigit-levers also operate the unmeshing-bar hereinafter described. Thethrow of said levers 18 in one direction is limited by the bar 24, fixedin the side Walls 21. Said sectors 23 are loosely mounted upon thefulcrum-shaft 25, which is fixed in the side walls 21. Said sectors areprevented from moving laterally upon said shaft by means of their hubsand by means of suitable spacingcollars. Said sectors are nine innumber, one for each of said digit-levers 18. Said sectors are providedwith two connecting cam-surfaces 27 and 28, which are acted upon by thepins 22 to rotate said sectors. Said surface 27, which forms a slot insaid sectors, constitutes a double cam and extends approximatelyradially, so that. when the parts are in normalpositions, as shown inFig. 31, said sectors are locked by said pins 22. The camsurface 28conforms to the arc ofacircle and is so placed that when a sector is inthe position shown in Figs. 33 and 34 the center of curvature of saidcam-surface is coincident with the center of the shaft 20. The bars 29and 30 are fixed in the side walls 21 and form stops for limiting therotation of said sectors 23. The parts are so arranged that when innormal position the sectors 23 are in proximity to the stop-bar 29, thelevers 18 are in proximity to the stop-bar 24:, and the pins 22 areadjacent to the cam-surface 27, all substantially as shown in Fig. 31.The first part of the downward stroke of the type-Writer key causes thepin 22 to travel along the cam 27, first moving inward toward the centerof the sector 23, as shown in Fig. '32, and subsequently moving outwardto the end of said cam, as shown in Fig. 33. When said pin has reachedthe end of said cam 27, the further rotation of said sector is preventedby the stop-bar 30. At this stage, however, the pin IIS 22 has reachedthe beginning of the cam 28, which now lies concentric with the path ofrotation of said pin. Said pin may therefore continue to move-forexample, to the position shown in Fig. 34-so that the throw of thetype-writer key is not limited by the digitsectors 23; but said sectorremains locked by said pin 22 until during the return stroke of the typewriter key said pin again reaches the cam 27. By preference said sectors23 are all of the same general outline and have the same amount ofrotation and diifer from each other only in the number of teeth withwhich said sectors are provided. The digit-sector corresponding to thedigit 9 has the highest number of teeth, the sector corresponding to thedigit 8 has one tooth less, the sector corresponding to the digit 7 hastwo teeth less than the sector for digit 9, and so on. These gear-teeth31 are for the purpose of rotating the universal gear 32, and it istherefore seen that the amount of rotation of the universal gear 32depends on the number of gear-teeth 31 of the driving digit-sector. Theamount of rotation of the universal gear 32 is therefore greatest forthe digit 9, is one step less for the digit 8, is another step less forthe digit 7, and least of all for the digit 1. In the present machinethe gear-teeth 31 are removed from the forward part of the sector thatis to say,the part which would first come into contact with theuniversal gear 32 when the sector is starting from the normal position.Said gear 32 is revolubly mounted upon the trnnnions 33, which have abearing in the side Walls 21. Said gear 32 extends across all of saidsectors 23, so thatit may be rotated by any one thereof. Said gear 32 isalso adapted to drive the laterally-shiftable master-pinion 34 when saidpinion is opposite to the toothed portion of said gear. In order thatsaid piir ion may be disconnected from said gear during the returnmotion of the latter, said gear is provided with a space 35, which isdevoid of teeth. As a result when said pinion is opposite to said spacesaid pinion is not rotated by said gear. Said master-pinion is rigidlyattached to its arbor 36, as are also the collars 37 and 3S. Said arbor36 is free to both rotate and slide in the walls 21. Said pinion 34 canthus be shifted into two positions, one shown in Fig. 24, in which saidpinion is opposite to the toothed portion of the gear The other positionof said pinion is shown in Fig. 25, in which said pinion is opposite tothe blank space 35 of said gear 32, above mentioned. Then in normalposition,said pinion is opposite to said toothed portion of gear 32,asshown in Fig. 24. Then the type-writer key is depressed, said geardrives said pinion 34. Should the typewriter key not have beensuilicicntly de' pressed, then on the return stroke of said key the gear32 will drive the pinion 34 back to its original position; but if saidkey is sulliciently depressed then said pinion is freed from connectionwith the gear 32 during the return of the latter by being shifted out ofmesh therewith toward the end of the downward stroke of said key, asshown in Fig. 25. The shifting of the master-pinion 34 out of mesh with.the gear "2 is accomplished by means of the unmeshing-cam 39. Said camis wedge-shaped and is carried upon the side of the plate 40 in such amanner that when said plate is rotated said cam will engage the collar37 and shift the spindle 36 to bring the pinion 34 opposite to the space35 when it is out of mesh with the gear 32. Said plate 40 is rigid withthe unmeshing-bar 41, said bar being revolubly supported in the sidewalls 21 by means of the trunnions 42. The rotation of saidunmeshing-bar 41 is effected by means of the arms 43, formed on said barand actuated by the digit-levers 18, after said levers have driven thedigit-sectors 23 to the limit of their rotation against the bar 30, asshown in Figs. 22, 33, and 34. Fig. 22 illustrates the position in whichthe sectors 23 have finished their rotation in a positive direction andthe arms 43 and plate 40 are about to commence their rotation in apositive direction. The spaces between said arms 43 are provided so asto make room for the cam extensions 28 on the sectors 23, therebypermitting the free motion of the parts. The spring 44, which encirclesthe unmeshing-bar 41, is attached at one end to said bar and at theother end to the pin 45 in one of the side walls 21 and tends to bringsaid bar and the arms 43 back into initial or normal position. Thestop-pins 46 and 47 (best indicated in Figs. 26, 27, and 28) arefastened in the side wall adjacent to the cam-plate 40. The pin 47prevents the said plate from rotating too far in a positive direction,while the pin 46 prevents said parts from rotating too far on thereturn. The shifting of the master-pinion back into a position to meshwith the ,gear 32 is accomplished by means of the cam 48, which isrigidly fixed to said gear 2 and engages the collar 38 on the arbor 36.Said inshiftingcam is wedge-shaped. and cooperates with theunmeshing-cam 39 to control the lateral position of said pinion. Saidcam is so constructed that when the type-writer key is up and the partsare in normal position the pinion is laterally held, so as to mesh withsaid gear, as shown, for example, in Figs. 20 and Said cams 39 and 48are so timed that the unmeshing-cam 36 shifts the pinion 34 out of meshwith the gear after the said gear has completed its rotation in apositive direction, and the cam 48 shifts said pinion hack into itsoriginal position just prior to the end of the return rotation of saidgear. The operation of the arms 43, which are rigid with theunmeshing-cam 30,

is illustrated in Figs. 22, 31, 32, 33, and 34.

inasmuch as the last portion of the return rotation of the said gear 32is required for the shifting back into mesh of the pinion 34 with thegear 32, a blank space 49 is provided on This permits said said gearfree from teeth.

ITO

pinion to complete its shifting without interference from the gear 32.On account of said blank space 49 the gear 32 rotates a slight distancein its positive direction before it begins to drive said master-pinion.This lost motion is constant for all the digit-sectors 23, because saidgear 32 is always stopped at the same point in its return rotation. Thestopping of the gear 32 at its initial or normal position is attained inthe present instance by a supplemental gear 50, (best shown in Figs. 6and 20,) which is in mesh with the gear 32 at a portion 51 thereon. Saidportion 51 of the gear '32 has a full complement of teeth, so that saidgears 32 and 51 are always in mesh. shaft 52. The spring 53 is fastenedat one end to said gear and at the other end to said shaft, said shaftbeing supported in the side walls 21. Said spring 52 tends to rotatesaid gear in such a direction as to drive the gear 32 to its initial ornormal position. The return rotation of said gears is limited by the pin54 in the hub of the gear 50, which strikes the stop pin 55, fastened inthe adjacent wall 21.

The program of operation of the mechanism for driving and shifting themaster-pinion 34 is as follows: When the type-writer key is up and themachine in normal position, said pinion is in juxtaposition to the space49 and the collar 37 lies in the path of the cam 39, as best shown inFigs. 20 and 24. As the typewriter key moves downward it causes adigitsector 23 to rotate, and in due time, depend ing upon the value ofthe respective digit, said sector commences to drive the gear 32. Thefirst part of the rotation of said gear will not affect the pinion 34 onaccount of the absence of teeth at the space 49. As soon as said gear 32has rotated an amount equal to said space said gear commences to rotatesaid pinion and drives the same until further motion is prevented by thesector coming against the stop-bar 30. Subsequently the arms 43 areengaged by the digit-levers 18, and the consequent rotation of theunmeshing bar 41 causes the cam 39 to approach the collar 37 and forceit aside, thereby shifting the pinion 34 out of mesh with the gear 32.Said pinion is now opposite to the blank space 35 on said gear. Therotation of said gear has caused the rotation of the gear against theforce of the spring 53 and the rotation of the cam 39 has been againstthe force of its spring 44. This much occurs prior to the end of thedownstroke of the type-writer key. On the return of the type-Writer keythe arms 43 first return to their normal position under the influence ofthe spring 44. Next the returning digit-sectors drive the gear 32 in thereturn direction; but the pinion 34 being out of mesh with said geardoes not rotate. Near the end of the return or negative rotation of thegear 32 the cam 48 thereon engages the collar 38 and shifts the pinion34 back into its initial position ready to be driven by said Said gear50 is revoluble upon the.

gear on the next stroke thereof. The contact of the pin 54 on the gear50 against the pin 55 prevents the gear 32 from returning too far. Thereturn rotation of said gear 32 is assisted by the spring 53 acting onthe supplemental gear 50. The inshifting of the pinion 34 by the cam 48is complete before the type-writer key reaches the end of its returnstroke.

The reversing mechanism-The reversing mechanism illustrated separatelyin Figs. 8 and 9 comprises the gear 34, 56, 57, and 58, said gears 57and 58 transmitting motion from the master-pinion 34 to thesetting-Wheel 58. Said gear 56 is loosely mounted on the reversing-shaft59, which is slidingly supported in the side walls 21 and projects'ateach end beyond said walls. The arms 60 60 are rig idly fixed on saidshaft 59 and prevent the wheel 56 from moving laterally thereon, saidwheel having on one side an elongated hub 61 for bearing against theadjacent arm 60. Said arms 60 extend to and loosely encircle theshaft62. Said shaft is fixed in the side walls 21 and the wheel 57 isfree to revolve and slide thereon. Said wheel 57 has an elongated hub63, and said arms 60 control the lateral position of said wheel, so thatwhen the reversing-shaft 59 is slid in its bearings it shifts the arms60 60, and consequently the wheels 56 and 57. Shafts 59 and 62 are soplaced that the wheels 56 and 57 mesh with each other and each may meshwith the master-pinion 34. The setting-Wheel 58 is revolubly mounted onthe shaft 64, but is prevented from lateral motion thereon by means ofthe sleeves 65. Shaft 64 is supported by the walls 21. The gear 57 isbroadfaced and may be shifted to its extreme positions without becomingout of mesh with the setting-wheel 58. The wheels 56 and 57 have aportion of their toothed faces overlapping, so as to be always in meshwith each other; but said surfaces extend in opposite directions fromthe said overlapping portion, so that when the gear-wheel 56 is in meshwith the pinion 34 the wheel 57 is out of mesh with said pinion, andwhen the gearwheel 57 is in mesh with said pinion the wheel 56 is out ofmesh therewith.

The parts of the reversing mechanism are so related that when the shaft59 and arms 60 are in the extreme position (shown in Fig. 9) the pinion34 meshes with the wheel 56, the wheel 56 meshes with the wheel 57, and

the wheel 57 meshes with the setting-wheel- 58; but when the shaft 59and arms 60 are in the other extreme position, as shown in Fig.

8, the pinion 34 is out of mesh with the wheel 56, but is in mesh withthe wheel 57, and said wheel 57 is in mesh with thesetting-wheel 58. Inthe first-described position (shown in Fig. 9) there are two gear-wheelsinterposed between the pinion 34 and setting-wheel 58, and thereforesaid setting-wheel rotates in the opposite direction to said pinion. Inthe second position (shown in Fig. 8) the gear 56 is gear-wheel 32.

aside, and there is only the wheel 57 interposed between said pinion andsetting-wheel, which therefore rotate in the same direction.Consequently the lateral shifting of the bar 59 causes a reversal in thedirection of rotation of the setting-wheel 58.

The locking mechanism-For preventing accidental rotation of thesettingwheel 58 a locking mechanism is provided, which is con structedas follows: The locking-lever is rigidly fastened on the rock-shaft 66and is adapted to engage the setting-wheel 58 and operate as a detenttherefor. Said shaft is revolubly supported in the side walls 21, but islaterally immovable therein. The arm 67 is also rigidly fixed to saidshaft 66 and is operated by the cam 68, rigidly set upon the (See Figs.6, 23, 2h, 29, and 30.) As hereinabove mentioned, the gear 32 has acertain lost motion at the first part of its positive stroke, and duringthis time the pinion Si is not controlled by said gear 32. The cam 68 isso constructed that it holds the locking-lever 65 in engagement with thesetting-wheel 58 during the said first part of the stroke of the gear32, while the pinion 34 is not engaged by said gear. This condition isshown in Fig. 39, the arrow showing the positive direction of rotationof the gear 32. The spring (39 (best shown in Fig. 12) encircles therock-shaft (56 and is fastened at one end to said shaft and at the otherend to the shaft 30 or other fixed part of the machine. The tendency ofsaid spring is to throw the locking-arm 65 out of engagement with thesetting-wheel 58. Just before the gear 32 has rotated far enough in thepositive direction to engage the pinion 34 said cam releases the arm(37, so that the spring (30 throws the locking-lever 65 out ofengagement with the setting-wheel 58, as shown in Fig. 30. Saidsetting-wheel is then free to be driven by the gear-wheel 32, actingthrough the medium of the pinion 34 and the gear-wheels of the reversingmechanism. As soon as the gear 32 has driven the setting-wheel 58 therequired amount the locking-lever 65 is thrown into engagement with thelatter by means of the relocking-arm 70. (Best shown in Figs. 12, 23,26, 27, and 2S.) Said relocking-arm is operated by means of the pin 71,which is located at the outer extremity of said arm and travels upon theedge of the plate 40. Said edge of the plate 40 forms two cam-sections72 and 73 for operating said pin 71, said cam-section 73 being circularand concentric with the trunnions 43, whcreon said plate i0 is mounted.The cam-section 72 lies nearer to said trunuions and permits the pin 71to move inward, thereby allowing the spring (if) to drive the rock-shaftit so that the lever 65 releases the setting-wheel 58. Then the pin 71is adjacent to the circular cam-section 73, the locking-lever (55engages said settingwheel and prevents the rotation thereof. At

the beginning of the positive or downward stroke of the type-writer keywhen the lever 65 is held in engagement with the settingwheel 58 by thecam 68, as shown in Fig. 29, the pin 71 on the lever 70 is away from thecamplate 40, as shown in dotted lines, Fig. 26. At this time saidcam-plate is in its initial position, where it is held against thestoppin 46 by means of the spring 44. As the type-writer key movesdownward and the gear 32 is rotated, so as to remove the cam 68 fromcontact with the rock-shaft arm 67, the spring 44 releases thelocking-lever 65 from the setting-wheel. This brings the pin 71 intocontact with the cam-section 72, as shown in full lines in Fig. 26.After the gear 32 has completed its rotation in a positive direction thecam-plate 40 begins to rotate in the direction of the arrow, Fig. 26,thereby bringing the circular cam-section 73 adjacent to the pin 71 andthrowing the lockinglever 65 into engagement with said setting-wheel.Inasmuch as the camsection 73 is concentric with said plate 40, saidplate is free to rotate farther in its positive direction; but saidlocking-lever does not release the settingwheel untilon the returnrotation of the camplate 40 the cam-section 72 comes adjacent to the pin71.

The race 1 0L715 mechanism.The receiving mechanism is not attached tothe stationary side walls 2], but is independent thereof, being mountedin a separate laterally-shiftable frame, which in the present machine islocated above the working parts hereinabove described. The side walls 7474 of the receiving mechanism are provided with sleeves or bosses 75 75,whereby said walls are slidingly mounted upon the bars 76 and 77. Saidbars are screwed at their ends to the brackets 78 78 on the frame-plate79. Said frameplate is screwed to uprights of the framework 1 of thetype-writer. The brackets 80 80 are are screwed to said frame-plate 79and to the side walls 21, thereby forming a rigid connection betweensaid parts. The receivingwheels S1 are loosely mounted on the shaft 32,but are prevented from sliding laterally thereon by means ofspacing-collars. (Best shown in Fig. 35.) Said shaft is fixed in thewalls 74 of the receiving mechanism. Said receivin g-whcels are placedequidistant from each other, and their distance apart is equal. to onecomplete step of the type-writer carriage. The receiving mechanismshifts laterally with the type-writer carriage, as will be hereinafterdescribed, and the wheels 81 are so placed that said wheels will bebrought into mesh with the setting-wheel 5S successively upon thesuccessive steps of the typewriter carriage-that is to say, theescapement of the type-writer carriage one full type-space will bringthe next adjacent receiving-wheel into mesh with said setting wheel. Thenumber of receiving-wheels is equal to the number of figure-wheels ofthe calculating mechanism and determines the value of the highest numberwhich can be shown on the mechanism. The wheels 81 Flo mesh'with thegear-wheel 83, one of said wheels 83 being secured to each of thefigurepieces 84 for rotating the latter. Said figure-pieces orfigure-wheels and the gearwheels 83 are loosely mounted on the shaft 85,but are prevented from sliding laterally thereon by the spacing-collars86. Said figure-wheels carry on their periphery a series of numericalcharacters or digits in the manner common to calculating-machines. Thenumber of teeth on the gear-wheels 83 is equal to the number of figureson said figurewheels. In the present machine each figurewheel has oneset of figures and each gearwheel 83 is provided with ten teeth. Theshaft 83 is rigidly supported in the walls 74.

As above stated, the receiving mechanism moves with the type-writercarriage, and in the type-writer here shown the movement of the carriageis from right to left looking at the front of the type-writer, as inFig. 1. In order that each receiving-wheel 81 may be locked prior to thetime when it comes into mesh with the setting-wheel 58, the lower bar 76is provided with a fin 87, (best shown in Figs. 45 and 47,) whichengages the teeth of said receiving-wheel and locks the same. Said finlies to the right of the position occupied by the setting-wheel 58 andterminates at a point such that any given receivingwheel is releasedfrom said fin just before coming into mesh with said setting-wheel. Bythis construction the receiving-wheels are locked by said fin until theyare engaged by said setting-wheel.

In order to eliminate the effect of looseness or backlash in the gearingand complete the effect of the setting-wheel 58, said receiving-wheelsare alined after leaving said setting-Wheel by means of the pin 88,which engages said receiving-wheels momentarily as they leave saidsetting-wheel. Said pin 88 extends only a short length, so that onereceiving-wheel is disengaged therefrom by the time the next succeedingreceiving-wheel is in mesh with the setting-wheel. The remainder of thebar 76that is, the part lying to the left of the pin 88-is cut away, soas not to interfere with the rotation of the receiving-wheels after theyhave passed said pin.

The tens-carrying mechanism for transmitting the proper rotation to thefigure-wheels after they have passed the setting-wheel 58 will now bedescribed. Each receiving-wheel 81 meshes with its respectivecarrying-wheel S9. Said carrying-wheels are loosely mounted upon theshaft 90, but are laterally immovable thereon. Said shaft is rigidlysupported in the walls 74. Said carrying-wheels (shown separately inFig. 49 and adjacent figures) are composed of three'sections 91, 92, and93, which may be out from a single block or formed separately andafterward brazed or otherwise secured together to act as a single piece.Looking from the front, as in Fig. 49, the section 91 lies upon theright and consists of a complete toothed gear-wheel. The

number of teeth on said section 91 is a multiple of twenty, the presentwheel having twenty teeth. The section 93at the left is a counterpart ofsection 92 in the middle and consists of a disk having a circularperiphery divided into two portions of different diameter. The portionof greater diameter corresponds to the point-circle and the portion ofsmaller diameter corresponds to the rootcircle of a toothed gear-wheel.The'pointcircle portion of each of said'disks exceeds asemicircumference by the space of one tooth, and said sections 92 and 93are so arranged in the carrying-wheel that said point-circle portionsoverlap each other an area equal to two teeth. These overlapping areasconstitute carrying-teeth and are located one hundred and eighty degreesapart-as shown, for example, in Figs. 54 to 56. The tens-carryingpinions 94 (best shown in Figs. 58 to 61) are also formed in threesections 95, 96, and 97, acting as a single piece. Looking from thefront the section 95 is located atthe left and consists of a completetoothed gear having an even number of teeth, the present number beingeight. Section 97 on the right is a counterpart of section 96 in themiddle, which is a gear-wheel like the wheel 95, except that eachalternate tooth is lacking. In the present machine each of the sections96 and 97 have four teeth like those of the section 95, but thearrangement is such that the teeth on the section 96 are adjacent to thespaces due to the missing teeth on the section 97. The teeth on thecentral section 96 are continuous with the teeth on the section 95, sothat when viewed in the direction of the arrow, Fig. 58, thecarrying-pinions have the appearance of an eight-toothed gear having afull complement of teeth. Said pinions are adapted to mesh with thecarrying-wheels 89 and are so placed relatively thereto that thesections 96 and 97 of any given pinion engage with the sections 93 and92, respectively, of a carryingwheel, but the section 95 of said pinionengages with the section 91 on the next carrying-wheel to the left, asshown in Fig. 57. In other words, each carrying-pinion engages twodifierent carrying-wheels,and the rotation of any given carrying-wheelis carried to the next adjacent carrying-wheel on the. left through theagency of their common carrying pinion. When a carrying-pinion is inengagement with its carrying-wheels and the point-circle portion of asection 92 is adjacent to a pinionsection 97, said point-circle portionenters between two teeth on said section 97 and prevents the rotationthereof, as shown in full lines in Fig. 56. At this time a tooth on thesection 96 of said pinion lies adjacent to the root-circle portion ofthe section 93 and is therefore in position to be engaged by theapproaching point-circle portion of said section 93, as shown in dottedlines, Fig. 56. As the point-circle portion or section 93 engages thetooth on section 96 the point-circle portion on section 92simultaneously releases section 97. The passing of one carrying-tooth onthe carrying-wheel therefore causes the carryingpinion to rotate adistance equal to the circular pitch of the pinion-teeth. It is thusevident that the carrying-wheels alternately lock and rotate thecarrying-pinions, the rotation of a pinion occurring when acarrying-tooth passes said pinion. Since said pinion is in mesh with thenext higher carrying-wheel, the rotation of any given carrying-wheel isthus communicated to the next higher carrying-wheel, thereby carryingthe tens.

Each carrying-pinion is mounted upon an independent shaft 08, supportedin its rocking frame 00. Said pinions are loose upon their shafts 98,but are prevented from moving laterally thereon by the forkedextremities of said frames. (Shown in Figs. 40 to 42.) Said frames arearranged in two series or gangs pivoted upon the shafts 101 101 in sucha manner that the carrying-pinions 04 lie alternately on opposite sidesof the carrying-wheels 80, as best shown in Figs. 2-36, 37, 43, and 44.Said shafts 101 are fixed in the walls 74. lly means of said rockingframes said carrying-pinions are swung into and out of mesh with thecarrying-wheels S9,and when said pinions are out of mesh they areprevented from rotating by means of the fixed locking-bars 102 in themanner shown in Fig. 37. Said locking-bars are slotted to receive theteeth of said pinions and are rigidly secured to the walls 74.

The alternate arrangement of the rocking frames 09 is best illustratedin Figs. 43 and 44,wherein it is shown that the rocking frames of onegang or series are laterally intermediate of the frames of the oppositegang or se ries. The chief purpose in thus grouping the rocking framesand pinions in two series is to gain sulficient room for said frames, sothat said pinions may gain access to said carryingwheels.

The position of any rocking frame radially about its pivot for swingingthe pinions 94 toward or from the carrying whcels S0 is determined bythe cross-section of the upper bar 77 at the particular point at whichsaid frame is for the moment located. The normal position of the rockingframes just before the receiving-wheels S1 reach the setting-wheel 58 issuch that the carrying-pinions 04 are out of mesh with thecarrying-wheels S0 and are locked by the bars 102, as shown in Fig. 37.The cross-section of said bar 77 is symmetrical with respect to the twogangs of rocking frames, and to facilitate description let it besupposed that a reference-plane a: .1111, Figs. 36, 37, 46, 47, and 48,be passed through said bar 77 at right angles to a plane containing thecenters of the locking-bars 102. Now referring to the upper gang ofrocking frames and to the portion of the bar 77 lying above the plane:1: c and also referring to that portion of the length of the bar 77which lies to the right of the setting-wheel the cross-section of saidbar is such that the toe 103 of the rock ing frame 90 is at its farthestdistance from the central axis of said bar, as shown in Fig. 37. At thesame point of cross-section of said bar the portion adjacent to the toe104 of said frame is cut away, so as not to interfere with said toe 104.As soon as the first receivingwheel 81 has passed into engagement withthe setting-wheel 58 the first carrying-pinion 04 is swung into meshwith its two carrying-wheels, so that the tens may be carried to thehigher figure-wheel, which has now passed beyond said setting-wheel.

The cross-section of bar 77 for holding the pinions 94 in mesh with thecarrying-wheels is shown in Figs. 36 and 4-6. Said eross-sec tion issuch that the toe 104 is farthest from the central axis of bar 77, whilethe portion of said bar adjacent to the toe 103 is cutaway, so as not tointerfere with said toe 103. At the point where the actual swinging ofthe rocking frames 90 takes place said bar 77 is further cut away foravoiding interference with the frame-toes. The cross-section of said barat this point is illustrated in Figs. 45 and 48. The Socket 105 isfastened to one of the walls 74 and is adapted to receive the lowerextremity of the depending controllingarm 100. Said arm is carried bythe sleeve 107, slidingly mounted on the toothed rack-bar 10S. Saidrack-bar extends across the front of the type-writer carriage 2 and isfastened thereto by means of the clips 100. In order that the positionof the sleeve 107 and arm 100 may be adjusted on the barlOS, said sleeveis provided with a pin 110, having a tooth 1.11 for engaging the teethon said bar. Said pin is mounted in said sleeve so as to slide thereintransversely to the length of said bar, and the spring 112 on said pinacts against said sleeve in such a manner as to force said tooth 111into engagement with the teeth on said rack-bar. lVhen it is desired toadjust said sleeve on said bar, the pin is temporarily forced out ofengagement with said rackbar and then permitted to spring back intoengagement therewith after said sleeve has been shifted to the desiredposition. It is by means of said arm 105 and the parts con necting thesame to the type-writer carriage 52 that the travel of said carriage isimparted to the receiving mechanism mounted in the walls 74, and theadjusted position of said arm to said rack-bar determines the point atwhich the receiving-wheels 81 will be in mesh with the setting-wheelThis adjustment therefore determines the position on the page whereatthe calculating-machine is operative. The socket 105 has parallel sideswhich loosely engage the lower extremity of the depending bar 106, sothat the travel of the type-writer carriage causes a correspondingtravel of the receiving mechanism; but the sides of said socket permitthe foreand-aft motion of said depending bar, so as IIO

